Apparatus for taking off single sheets from piles.



S. FELDMAN.

APPARATUS FOR TAKING OFF SINGLE SHEETS FROM FILES.

APPLICATION FILED SEPT. 5| 19H).

1,291,455. Patented Jan. ,14, 1919.

INVENTOR BY gag ATTORNEY ya: man: I-lrins cm, rrwmurna. wunmanm. a

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STATES n'rnn'r oFFI SHIMON FELDMAN, 0F

ACTION POUR- CONSTRUCTION DE MACHINES, OF PETROGRAD, RUSSIA.

APPARATUS FOR TAKING OFF SINGLE SHEETS FROM FILES.

Application filed September 5, 1918.

To all whom it may concern:

Be it known that I, SHIMON FELDMAN, a citizen of Russia, and residing atPetrograd, Russia, have invented certain new and useful Improvements inApparatus for Taking Ofi Single Sheets from Piles, of which thefollowing is a specification.

In the separation of single sheets from a pile, many defects occurbecause the sheet to be separated is subjected to the pressure of thewhole pile. Besides this, while the separation proceeds, the weight ofthe pile varies and the action of the apparatus thereby becomesvariable.

This drawback is removed by such an arrangement as hereinafterdescribed, by means of which a part of the pile is lifted so that thesheet to be separated has only a certain small pa t of the pile restingupon it.

The accompanying drawings show one mode of carrying the invention intoeffect in which Figure 1 shows an end view of the apparatus.

Fig. 2 is a front View showing the entire mass of sheets lying on thesheet to be separated.

Fig. 3 is a similar view showing a part of the pile lifted.

In the drawings the columns 1 support the shaft 2 having the roller 3 onwhich the pile of sheets 4 bears, (Fig. 2). In the position shown inFig. 2 the pile rests on this roller 3 with its whole weight. Thecolumns 1 support a rotatable shaft 5 provided at its ends with disks 6having cam grooves 6 in which are arranged rollers 7 carried by levers8, which are pivoted at 8 to the sides of the columns. As the disks 6rotate, the rollers 7 will travel in the grooves 6 and cause theoscillatlon of the 8 about their pivots. The levers are levers torecelve pro1ect1ons 9 carslotted at 8 ried by vertically sliding shoes10, which Each shoe has are mounted in the column. at its top ahorizontal sleeve 11 in whlch rods 12 are slidably mounted, and eaclrrodis provided with a plate 13. The springs 14 have a tendency to normallypress these plates 13 toward the pile.

In the position shown in Fig. 9., in which Specification of LettersPatent.

Patented Jan. 14, 1919.

Serial No. 252,806.

the shoes are in their lowest position, the rollers 16 mounted on therods 12 bear against cams carried by the posts 15 and cause the plates13 of the rods 12 to move outwardly, thus permitting the pile to freelydrop on the roller 3. As the shoes 10 rise to their highest position therollers 16 rolling off the cams on the posts 15 permit the springs 14:to move the plates 13 lnward or toward each other, and said platesclamping the pile, lift same, leaving on the roller 3 only a smallquantity of sheets. When the pile is thus lifted the separation of thelowest sheet may be effected, and thereafter by the further rotation ofthe cam disk 6 the pile 4, relieved from tlie clamping plates 13, dropsto its original p ace.

Having now described my invention, what I claim as new and desire tosecure by Letters Patent is 1. Apparatus for the purpose described,

comprising in combination, a pile of sheets of paper, roller feedingmeans beneath the lowest sheet which normally supports the weight of thepile, a plate at each side of the pile, and means whereby the platesclamp the pile between them and lift the greater part of it when thelowest sheet is being fed.

2. Apparatus for the purpose described, comprising in combination, apile of sheets of paper, roller means for feeding the lowest sheet andwhich normally support the whole weight of the pile, a plate at eachside of the pile, automatic means to positively move the plates inwardto engage the pile and lift the greater part thereof when feeding is tooccur, and means to withdraw the plates after feeding has occurred.

3. An apparatus for the purpose described comprising in combination apile of sheets, means for feeding the lowest sheet and which normallysupports the weight of the pile, clamping means at opposite sides of thepile, and means whereby the clamping means clamp the pile and lift thegreater part of it when the lowest sheet is being fed.

4:. An apparatus for the purpose described comprising in combination apile of sheets, means for feeding the lowest sheet and which normallysupports the whole weight of the pile, a plate at each side of the pile,

rods supporting said plates, vertically movname to this specification inthe presence of able beak-rings supporting said rods, resilient twosubscribing witnesses. means 'or moving said plates towardeaeh w otherto clamp-the pile, and means for mov- SHIMON B ELDMAN' ing said platesapart When said bearings Witnesses: move downwardly. BORIS 'MoFsIK,

In testimony whereof I have signed my Mosns sUISAR-ANKA.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, I). G.

